Relicensing Combined Datasets (ReCoDa)

This repository contains code to generate a list of compatible licenses based on multiple input licenses to be checked. The following main steps are executed:

• Creation of a KnowledgeBase which contains the licenses and attributes.
• License Attribute values are mapped according to their type.
• The Operator computes composite attributes of all input licenses.
• Finally, the BackMapping creates a list of compatible licenses.
• To add additional Knowledge Bases, the AttributeFactory can be utilized and afterwards the Execution methods help to run an experiment.

Download

Downloads are available at the releases page.

Evaluation and experiments

For the evaluation of the approach, experiments based on two license datasets are provided: Creative Commons and the European Data Portal (EDP) License Compatibility Matrix.

Creative Commons experiments

To run the evaluations based on Creative Commons, you first have to download the underlying dataset. Therefore, download or clone the cc.licenserdf repository. Afterwards, the directory of the repository can be set by the system property cc.licenserdf. Example commands to run the experiments are listed below.

Creative Commons License Compatibility Chart

java -Dcc.licenserdf=cc.licenserdf-master/cc/licenserdf/licenses/ -jar ReCoDa.jar cc1

This will run the CcExperiment.

Creative Commons cc.licenserdf with two input licenses

java -Dcc.licenserdf=cc.licenserdf-master/cc/licenserdf/licenses/ -jar ReCoDa.jar cc2

This will run the CcExperimentTuples.

Creative Commons cc.licenserdf with three input licenses

java -Dcc.licenserdf=cc.licenserdf-master/cc/licenserdf/licenses/ -jar ReCoDa.jar cc3

This will run the CcExperimentTriples.

European Data Portal experiments

To run the evaluation of the European Data Portal (EDP) License Compatibility Matrix, run the following maven command:

mvn clean test -Dtest=EdpLcmEvaluationTest -Drun.edp.lcm.tests=true

This will run the additional EdpLcmEvaluationTest.

Credits

Data Science Group (DICE) at Paderborn University

This work has been supported by the German Federal Ministry of Transport and Digital Infrastructure (BMVI) in the project Open Data Portal Germany (OPAL), funding code 19F2028A, dice-research.org/OPAL, projekt-opal.de.